278228720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1$

素因数の和:140

約数の個数: 240

約数和(自身を含む): 851088384

約数和(自身を除く): 572859664

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 31, 35, 40, 44, 47, 55, 56, 62, 70, 77, 80, 88, 94, 110, 112, 124, 140, 154, 155, 176, 188, 217, 220, 235, 248, 280, 308, 310, 329, 341, 376, 385, 434, 440, 470, 496, 517, 560, 616, 620, 658, 682, 752, 770, 868, 880, 940, 961, 1034, 1085, 1232, 1240, 1316, 1364, 1457, 1540, 1645, 1705, 1736, 1880, 1922, 2068, 2170, 2387, 2480, 2585, 2632, 2728, 2914, 3080, 3290, 3410, 3472, 3619, 3760, 3844, 4136, 4340, 4774, 4805, 5170, 5264, 5456, 5828, 6160, 6580, 6727, 6820, 7238, 7285, 7688, 8272, 8680, 9548, 9610, 10199, 10340, 10571, 11656, 11935, 13160, 13454, 13640, 14476, 14570, 15376, 16027, 17360, 18095, 19096, 19220, 20398, 20680, 21142, 23312, 23870, 26320, 26908, 27280, 28952, 29140, 32054, 33635, 36190, 38192, 38440, 40796, 41360, 42284, 45167, 47740, 50995, 52855, 53816, 57904, 58280, 64108, 67270, 72380, 73997, 76880, 80135, 81592, 84568, 90334, 95480, 101990, 105710, 107632, 112189, 116560, 128216, 134540, 144760, 147994, 160270, 163184, 169136, 180668, 190960, 203980, 211420, 224378, 225835, 256432, 269080, 289520, 295988, 316169, 320540, 361336, 369985, 407960, 422840, 448756, 451670, 496837, 538160, 560945, 591976, 632338, 641080, 722672, 739970, 815920, 845680, 897512, 903340, 993674, 1121890, 1183952, 1264676, 1282160, 1479940, 1580845, 1795024, 1806680, 1987348, 2243780, 2484185, 2529352, 2959880, 3161690, 3477859, 3613360, 3974696, 4487560, 4968370, 5058704, 5919760, 6323380, 6955718, 7949392, 8975120, 9936740, 12646760, 13911436, 17389295, 19873480, 25293520, 27822872, 34778590, 39746960, 55645744, 69557180, 139114360, 278228720]

約数ペア:

[(1, 278228720), (2, 139114360), (4, 69557180), (5, 55645744), (7, 39746960), (8, 34778590), (10, 27822872), (11, 25293520), (14, 19873480), (16, 17389295), (20, 13911436), (22, 12646760), (28, 9936740), (31, 8975120), (35, 7949392), (40, 6955718), (44, 6323380), (47, 5919760), (55, 5058704), (56, 4968370), (62, 4487560), (70, 3974696), (77, 3613360), (80, 3477859), (88, 3161690), (94, 2959880), (110, 2529352), (112, 2484185), (124, 2243780), (140, 1987348), (154, 1806680), (155, 1795024), (176, 1580845), (188, 1479940), (217, 1282160), (220, 1264676), (235, 1183952), (248, 1121890), (280, 993674), (308, 903340), (310, 897512), (329, 845680), (341, 815920), (376, 739970), (385, 722672), (434, 641080), (440, 632338), (470, 591976), (496, 560945), (517, 538160), (560, 496837), (616, 451670), (620, 448756), (658, 422840), (682, 407960), (752, 369985), (770, 361336), (868, 320540), (880, 316169), (940, 295988), (961, 289520), (1034, 269080), (1085, 256432), (1232, 225835), (1240, 224378), (1316, 211420), (1364, 203980), (1457, 190960), (1540, 180668), (1645, 169136), (1705, 163184), (1736, 160270), (1880, 147994), (1922, 144760), (2068, 134540), (2170, 128216), (2387, 116560), (2480, 112189), (2585, 107632), (2632, 105710), (2728, 101990), (2914, 95480), (3080, 90334), (3290, 84568), (3410, 81592), (3472, 80135), (3619, 76880), (3760, 73997), (3844, 72380), (4136, 67270), (4340, 64108), (4774, 58280), (4805, 57904), (5170, 53816), (5264, 52855), (5456, 50995), (5828, 47740), (6160, 45167), (6580, 42284), (6727, 41360), (6820, 40796), (7238, 38440), (7285, 38192), (7688, 36190), (8272, 33635), (8680, 32054), (9548, 29140), (9610, 28952), (10199, 27280), (10340, 26908), (10571, 26320), (11656, 23870), (11935, 23312), (13160, 21142), (13454, 20680), (13640, 20398), (14476, 19220), (14570, 19096), (15376, 18095), (16027, 17360)]